"Web Redesign 2.0 - Workflow That Works" by Kelly Goto and Emily Cotler
If I were teaching a course on IA, this would be one of the textbooks.
It covers the entire waterfall process step-by-step from exploration and
requirements gathering through planning, structuring, document
generation, usability testing, visual design, technical development, QA
testing, and finally maintenance and future planning.
And somehow, they manage to cover all of this in depth (much more so
than Garrett in his "Elements of UX" book) and still present a nice,
easy read.
In the real world, the steps they outline are seldom ALL followed
completely or in sequence. But this book shows you what the rules are,
so you know what rules you're bending, breaking, or ignoring completely
as you work on your projects.
- Jonathan